In this post, I will share two solutions on how to resolve unwanted top spacing in your button elements. This issue usually happens when you have a newline or word break inside the button text value. The image below illustrates this. Solutions We can fix this issue by adding a vertical-align property into the CSS […]
Tutorials
Load balancing and redundant Internet connection using TP-Link ER6020
Overview I started my homelab journey in 2017 setting up small server to host my files and test my web applications. Today, I am giving my small network a bit of an upgrade by having a redundant Internet connection using a TP-Link ER6020. I appreciate that TP-Link made it affordable for us to buy business […]
Using MySQL TIMESTAMPDIFF to delete unverified user records
Building a public website with user registration and email verification is typical. It will require users to validate their email by clicking a unique generated URL link. Sometimes, user registration with pending verification will grow exponentially and needs an automated cleanup of records. In this example, I created a simple MySQL stored procedure to delete […]
How to stop Mailtrack from tracking you
Mailtrack is an online service that provides email tracking capability and analytics. Using its services the sender can track when the receiver read the email, when it was viewed and where is the reader’s location. It is a great tool for marketing but I feel that this is invading privacy and I would like to […]
How to connect to a Cisco VPN in Ubuntu 18.04 LTS
Here’s the simple steps for you to connect to a Cisco VPN in Ubuntu 18.04 LTS. Cisco, an American company is the leading provider and manufacturer of enterprise network devices, telecommunication hardware, networking security and networking software. According to computer profile as of April 2018, Cisco holds a 73.9% market which makes it the undisputed […]
Bash string manipulation in program arguments
In this code snippet, I would like to run an application with a URL payload based on date and time. This code will be executed in a specific schedule everyday and I would like to dynamically inject the date and time in the program argument when the program executes. ./json2csv rules.json “ncp” “http://localhost:8080/api/zget?eid=get-ncp-mv-by-starttime-endtime&starttime=$(date –date=’yesterday’ +\%Y-\%m-\%d)+00:00:00&endtime=$(date […]
A simple firewall-cmd cheatsheet
Get Default Zone Get Active Zones List Zone Services Add a permanent port into a zone Remove a permanent port from a zone Firewall-cmd reload I tested this using CentOS 7 with firewalld service running. Get Default Zone To know the default zone, use this command firewall-cmd –get-default-zone Get Active Zones firewall-cmd –get-active-zones List Zone […]
How to use Cloudflare as Dynamic DNS
In this post I will share how I use Cloudflare as Dynamic DNS. I was previously using dynamic DNS service from No-IP for three years until a colleague of mine mentioned about Cloudflare’s really fast global DNS. Initially, I thought that Cloudflare was just a CDN and an Internet company that protects websites from Distributed […]
Configure Tomcat To Run on Linux Startup
If you are using the core version of Apache Tomcat and would like auto-start it on Linux here are the simple steps. I assume that you already have a running Apache Tomcat and know how to navigate to the terminal and have necessary system permission to proceed with this tutorial. Depending on the distribution that […]